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cs.LG2026
Transfer-Stratified On-Policy Distillation for RL-Improved Reasoning Teachers
Xiaoyu Chen, Bo Shao, Tiangang Zhu +5
Reinforcement learning can substantially improve a reasoning teacher, but it is unclear which of those improvements survive when the teacher supervises a smaller on-policy student.…
cs.AI2026
What Is a Skill Worth? Structure-Aware Shapley Valuation of Agent Skills
Tao Li, Junfeng Liu, Qinghua Zhao +5
Agent skills are increasingly optimized by automated feedback loops, producing long structured artifacts whose internal value remains unclear. We study skill valuation: assigning c…
cs.CL2026
Hallucination Self-Play: Bootstrapping Reinforced Detector via Evolved Generator
Shiping Yang, Shining Liang, Weihao Liu +4
Identifying faithfulness hallucinations in LLM-generated outputs remains challenging due to the scarcity of high-quality annotated data. Recent work relies on advanced LLMs to synt…